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Method and device for high-temperature co-gasification of combustible solid waste, biomass and coal

A technology for solid waste and biomass, applied in the production of combustible gas, granular/powder fuel gasification, gasification process, etc., to achieve the effect of reducing processing energy consumption, realizing energy, improving calorific value and energy utilization rate

Inactive Publication Date: 2018-05-15
BEIJING LEIHAO ENVIRONMENTAL PROTECTION ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned technical problems in the prior art, the present invention provides a high-temperature co-gasification method and device for combustible solid waste, biomass and coal, which not only improves the calorific value and energy utilization rate of coal gas after gasification, but also saves Coal gasification production cost, and environmentally friendly, has solved the problem of comprehensive treatment and utilization of combustible solid waste and biomass, and realized the maximum utilization of energy

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  • Method and device for high-temperature co-gasification of combustible solid waste, biomass and coal

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Embodiment approach

[0024] (1) The sorting can adopt the magnetic separator in the prior art to sort combustible solid waste and biomass; The waste and biomass are pulverized; the drying can use the drum dryer in the prior art to dry the pulverized combustible solid waste and biomass, and can use the hot air obtained by heat exchange with flue gas Drying is carried out, and the dried gas can be sent into the combustion process to participate in the combustion, and after participating in the combustion, it becomes a part of the flue gas, which further realizes heat recycling and can effectively reduce pollution.

[0025] (2) The sum of the mass percentages of combustible solid waste and biomass in the mixed material is less than 60%, and the melting temperature of coal in the mixed material is >1150°C.

[0026](3) In order to provide an efficient reaction place for the mixed materials, the reaction temperature of the gasification process is controlled at 800-950°C. Gasification at such a higher te...

Embodiment 1

[0040] Such as figure 1 As shown, a combustible solid waste, biomass and coal high-temperature co-gasification device, its specific structure may include: a combustion furnace 1, a first gas-solid separator 2, a first solid return device 3, a bubbling bed gas Furnace 4, second solid feeder 5, first air-water heat exchanger 6, air preheater 7, steam drum 8, second gas-solid separator 9, superheater 10 and second air-water heat exchanger 11. Combustible solid waste and biomass are sequentially sorted, pulverized and dried, and then mixed with coal to obtain a mixed material; the mixed material is sent to the bubbling bed gasifier 4 and the combustion furnace 1 .

[0041] In the bubbling bed gasification furnace 4, the gasification reaction temperature is controlled at 800-950°C, and the synthesis gas with solid particles produced by the bubbling bed gasification furnace 4 is sent to the second gas-solid separator 9 for gas-solid separation. The separated solid particles are re...

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Abstract

The invention discloses a method and device for high-temperature co-gasification of combustible solid waste, biomass and coal. The method includes the following steps: performing sorting on the combustible solid waste and the biomass, performing crushing, performing drying, and performing mixing with the coal to obtain a mixed material; performing gasification on the mixed material, performing combustion, sending a mixed material which is not completely reacted in the gasification process to the combustion process for combustion, performing gas-solid separation on a flue gas which has high-temperature ash and is generated in the combustion process, and sending the separated high-temperature ash to the gasification process to provide heat for a gasification reaction, so as to make the gasification process coupled with the combustion process. The method provided by the invention not only improves the coal gas calorific value and energy utilization rate of gasified coal, saves the production costs of coal gasification, but also is environmentally friendly, solves the comprehensive treatment and utilization problems of the combustible solid waste and the biomass, and realizes the maximum utilization of energy sources.

Description

technical field [0001] The invention relates to the technical field of utilization of combustible solid waste and biomass, in particular to a high-temperature co-gasification method and device for combustible solid waste, biomass and coal. Background technique [0002] With the development of society, the types and quantities of combustible solid wastes are increasing, which has a great adverse impact on the environment and a large waste of resources. Therefore, it is very necessary to comprehensively treat and utilize combustible solid wastes. . In the existing technology, the treatment methods for combustible solid waste mainly include incineration, landfill and plasma pyrolysis; incineration and landfill not only fail to realize comprehensive treatment and utilization, but also cause secondary pollution to the environment, while the operation of plasma pyrolysis process The cost is very high, the requirements for processing equipment are complicated, and large-scale proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/46C10J3/48C10J3/80C10J3/84C10J3/72
CPCC10J3/46C10J3/48C10J3/72C10J3/80C10J3/84C10J2300/0909C10J2300/0916C10J2300/093C10J2300/0946C10J2300/0976
Inventor 雷晓平孟莹房贤卓翟耀辉陈博彭超霍锡臣
Owner BEIJING LEIHAO ENVIRONMENTAL PROTECTION ENERGY TECH
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